Paragraph : A scientist was asked to find the height of the roof of a dome shaped hall. He took a spherical ball of radius 20 cm which he suspend with the string from the roof of dome. The height of the ball above the ground was 5 cm when suspended. He noted the time of 20 oscillations to be 100 s. The time period of the pendulum when suspended from roof is :

Paragraph : A scientist was asked to find the height of the roof of a

1.	Paragraph : A scientist was asked to find the height of the roof of a dome shaped hall. He took a spherical ball of radius 20 cm which he suspend with the string from the roof of dome. The height of the ball above the ground was 5 cm when suspended. He noted the time of 20 oscillations to be 100 s. The time period of the pendulum when suspended from roof is :
Answer» 5 s 10 s 20 s 100 s. Solution :`T=(100)/(20)=5" s"` So CORRECT choice is (a).

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